Crib and bin ventilator



UNITED STATES PATENT, OFFICE.

JOHN D. OVERHOLT, OF WOOSTER, CHIC CRIB AND Bin vnnr na'ron.

To all whom it may concern: I 7

Be it known that I, J oHN D. OvEnnoL'r, a citizen of the United States, residing at Wooster, in the county of Wayne and'State of Ohio, have invented a new and useful Crib and Bin Ventilator, of which the following is a specification. I

My invention relates to improvements in crib and bin structures for houslng corn, wheat and other grains, and particularly to improvements in means for ventllatmg the same, and preventing the heating and molding of such grains while stored in such crib or bin, and add to the efficiency of my crib and bin ventilating system for which Letters Patent of the United States were issued September 30th, 1919 (No. 1,317 ,309). The principal object of my present 1nvent1on 1s to rovide means for regulatin' drafts through the ventilating s aft, and for compelling the air currents to flow into and through the mass of grain while stored in the crib or bin, and for their escape upwardly through the ventilating shaft more rapidly.

Heretofore ventilating shafts have been constructed with a hollow body having numerous perforations for the admission of air thereto, and arranged to stand about centrally within and to extend from the bottom to the top of the crib or bin. And in the patented device above referred to a large air chamber was provided at the bottom of the ventilating shaft to aid in preventing the heating and molding of the grain at the extent, and that when the flanged terminus bottom of the crib or bin.

I have also discovered that better ventilation is afforded through the ventilating shaft by limiting the perforations therein to that part which is usually surrounded with the stored grain, but as this portion is subject to frequent changes by the filling and emptying of the crib, I have provided improved means for opening and closing at pleasure the perforations in the ventilating shaft enough of the way down from the top to confine them almost entirely to the part which is immersed in the mass of grain within the crib or bin-all as hereinafter fully set forth, and as stated in the appended .claims.

My invention is illustrated by the accompanying drawing in which similar letters and figures-of reference indicate like parts.

Referring thereto, the figure is a sectional view of a crib body and ventilating shaft the air Specification of Letters Patent. patented jg b. 22 1921' Application filed February 5, 1920. Serial No. 356,527.

embodying my invention which is shown therein in section upon the ventilating shaft.

In the drawing, A indicates the body of a crib structure, such as I use, B is the roof or cover, and D the bottom or floor thereof; E is the ventilator shaft, F the air chamber at its base,'and G the wind-shield above the open top of the shaft+all said members being such as heretofore used, and no claim is made thereto except as specifically stated. H is my novel device for covering and uncovering portions of the ventilating shaft E and perforations therein. It is mounted to slide up and down as a cylindrical sleeve over the surface of said shaft, and is provided with a flanged border at its lower terminus, and an outwardly flared rim h at its upper terminus, and its downward movement may be limited either by said flanged border coming into. contact with the mass of grain in the crib or bin, or by means of a pleg p inserted in a perforation of the shaft.

eans for adjustably lengthening the sleeve member are provided by coupling therewith an upper cylindrical member I in telescopic fashion, by an inwardly flared terminus j adapted to engage the said rim h, as shown in cross section in the figure. The top of said 'upper member I may be flared inwardly into closer contact with the ventilator shaft, as shown at i, and may be held in any desired position by a peg p, or equivalent means.

It is apparent that when the sleeve H is lowered it will automatically close the perforations of the ventilating shaft to that a reaches the mass of grain in the crib or bin all the perforations above said mass will be closed, thus making a substantially continuous air draft from said rain mass to the top of the ventilating sha Thus also a suction is created through the mass of grain more directly, while the heat thereof escapes upwardly through said shaft E and said enveloping sleeves.

sion of air, in combination with a shiftable sleeve mounted to slide thereon, and comprising portions telescoped together, and capable of extension longitudinally in either direction over the said shaft to cover the perforations therein, substantially as set forth, andfor the purpose specified;

3. In a crib or bin, the combination. with a I grainv in said crib adjacent to said shaft, substantially as set forth. 7

In witness whereof, I hereunto set my 15 hand in the presence of two witnesses this 17 day of October, 1919.

JOHN D. ovERHoL T.

Witnesses:

CHARLES C. JONES, HIRAM B. SCHWARTZ. 

